Truck.



RICHARD 'OSXYALD, OF PITTSBURG; PENNSYLVANIA.

speciaasion of Letters Patent.

a rinattesi.

Patented sept. 29,1908.

implication 'sied August 16, 1906. serial No. 330,912.

T o allwhom it may concern: i l

Be it known that I, RICHARD W. OswiiLn, a citizen of l the UnitedStatesof America. residing at'Pittsburg, in the countv of fillegheny andState/ot Pennsvlvania; have in'- vented certain new and usefulimprovements in Trucks, of which the following isa specification,reference being had therein to the accompanying drawing. This inventionrelatesto trucksLand the invention relates to certain new and usefulimprovements in theside frames thereof.l

The invention ainisto provide positive and reliable means forstrengthening and increasing the durable qualities fot `the frame, so,also forequalizing "the stresses and strains exerted upon the trames bvthe road bed and weight of the rolling stock.

steel frame for tru s in^which trusses are employed and advantageouslydistributed to insure a strong, inexpensive and highly etlicient truckframe. The detail construction of in v improved truc-k frame will bepresently described, illustrated and then specifically pointed. out inthe appended claims,

Referring to the drawingforming part of this specification, likenumerals ot' reference designate corresponding pai-ts throughout vtheseveral views, in which Figure 1 is an elevation of a truck equippedwith one of my improved frames, Fig. 2 1s a plan of the frame7 Fig. 3 isan elevation otl a truck equipped with a modified form of frame, Fig. 4is a plan of the trame. Figs. 5 and 6 ar-e elevations ot' trucks havingframes of varying constructions, but within the scope of the invention.

To put nirv invention into practice, I construct my improved truckframes of cast steel, each frame consistingV of an upper arch l -bar orcompression member 1, and lower arch bar oi` tension member or pedestaltie 2, which are connected together by vertically disposed bars 3andilanged trusses 1. The ends ot the bars 1 and '.2 merge into thepedestal opening in which to support the journal boxesot a truck.Between the centralmostbars 3 are supported spring planks (i andtransoins T, and upon the .planks t3 are mounted anest of coiled springsS adapted to support the bolster-U` oll a truck'.

.fis shown, each of the 'flange trusses cou- .sts of tworeverselvv-ilisposed diagonallyextending braces formed integral withEeach other and having their planes crossing each vother at an angle andat a point intermediate a plurality of 'angles on opposite sides of theshock-dist'ributing peint being ot' equal degree, so that all strainsplaced on the truss are distributed from a common point and the'rebvpreventing an;v lialzfilitv of the truck frame being disturbed iii-use.

The. truck 10 illustrated in Fig. 1 is the most commonly used, and inconnection with this type of truck I reinforce the upper arch bar 1 asat 11` also-the bars 3, as at 12.

In Fig. 3 I have illustrated the pedestal jaws 14 and arch bar .1 asbeing reinforced, as .at l5. 'In Fig. 5 a truck isy illustrated espefcialluv designed for low bolsters. To this end, I have devised al novelcastI A modification. ot the trusses is shown in Fig. o wherein thetlanged trusses a-reprovided with central reinforcing webs 16, whichtend to increase therigiditv ot' the frames. In this form theshock-distributing point is in the form ol' an annular member (annularwith'respect to the actual crossing point ol the construction shown inthe other figures.) The eiiect, however, of this construction ispracticalhv the same as that above described.

l`hroughout the several forms of frames, it will be'observed that thetrusses -t form an important adjunct to the trames, and they man)vadvantages of the frames over those atpresentused will be readilyapparent to those skilled in rolling stock construction.

Such changes in the arrangement of the trusses and minordetails of myimproved frames as are permissible by the appended claims, may beresorted to without departingfrom the spirit and scope of the invention.

llvhat I claim and desire to secure by Loti ters Patent, isz- 1. A trucksido fra-me comprising a compression member and a. tension member spacedfrom and opposing each other, the. space between said members beingconnected b v parallel vertically-extending bars formed integral withsaid members` a bolster opening being formed between the inner bars, thez'i-djacent openings having two reversely-disposed diagonalliv extendingbraces formed integral with each other and having their planes crossingeach other at iin'angle at a point intermediate-the ends ol the bracesto liorm n .sl-rochalistributing point7 each of said braces having areinforcing web extending on opposite sides thereof, said braces andwebs being formed integral with said members and said bars, said framehaving pedestal openings at its ends. v

A truck side frame comprising a compression member and a tension memberspaced from and opposing each other, the space between said membersbeing eonneeted by parallel vertieally-extending bars formed integralwith said members, a bolster opening being formed between the innerbars, ,the adjacent openings having` two ireversely-disposed diagonallyextending braces formed integral with each other and having their planescrossing eachother at an angle at a point intermediate the ends of thebraces to form ashoek distributing point, said point being in the formof an annular member, each of said braces having a reinforcing webextending` on opposite sides thereof, said braces and webs being formedintegral with said members and said bars, said frame having pedestalopenings at its ends.

3. A truck side frame comprising a oompression member and a tensionmember spacedv from and opposing each other, the space between saidmembers being connected by parallel vertically-extending bars. I'oi medintegral with said members, a bolster opening being formed betweentlieinner bars. .1w ndjaeent openings having two reverse!)V disposeddiagonally extending braces formed integral with each other and havingtheir planes crossing eaeh other at an angle at a point intermediate theends of the braces to form a shook-distributing point., said point beingin the form of an annular member, said member having its peripherycurved and formed integral with the bars, lthe latter radiating fromsaid annular menber, each of said braces and theannular member having areinforcing web extending on opposite ,sides thereof, said braces andtheir webs be ing formed integral with said members and said bars, thewebs on the. outer face of tht` annular member being formed integralwith the webs of the braces, said frame having pedestal openings at itsends.

In testimony whereof I atlx myl signature in the presence of twowitnesses.

RICHARD W. OSVALD. Titnesses MAX H. SRoLovrTz, K. H. BUTLER.

